tests: run disconnect_during_module.yml in subprocess

Avoid entire run failing with unreachable

tests/ansible/integration/connection/_disconnect_during_module.yml

@@ -0,0 +1,13 @@
+# issue 352: test ability to notice disconnection during a module invocation.
+---
+
+- name: integration/connection/_disconnect_during_module.yml
+  hosts: test-targets
+  gather_facts: no
+  any_errors_fatal: false
+  tasks:
+  - run_once: true  # don't run against localhost
+    shell: |
+      kill -9 $PPID
+    register: out
+    ignore_errors: true

tests/ansible/integration/connection/disconnect_during_module.yml

@@ -2,18 +2,23 @@
 ---
 
 - name: integration/connection/disconnect_during_module.yml
-  hosts: test-targets localhost
+  hosts: test-targets
   gather_facts: no
   any_errors_fatal: false
   tasks:
-  - run_once: true  # don't run against localhost
-    shell: |
-      kill -9 $PPID
+  - connection: local
+    command: |
+      ansible-playbook
+      -i "{{inventory_file}}"
+      integration/connection/_disconnect_during_module.yml
+    args:
+      chdir: ../..
     register: out
     ignore_errors: true
 
+  - debug: var=out
+
   - assert:
       that:
-      - out.msg.startswith('Mitogen was disconnected from the remote environment while a call was in-progress.')
-
-  - meta: clear_host_errors
+      - out.rc == 4
+      - "'Mitogen was disconnected from the remote environment while a call was in-progress.' in out.stdout"